Sökning: "epoxy mica insulation"

Hittade 2 uppsatser innehållade orden epoxy mica insulation.

  1. 1. Implementing VLF as diagnostic test for HV motors and generators : A comparative study of diagnostic tests performed at different frequencies

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Niklas Hedlund; [2019]
    Nyckelord :Dissipation factor; epoxy mica insulation; partial discharges; rotating machines; stator winding insulation; very low frequency;

    Sammanfattning : High voltage testing of the stator winding insulation is one of the most recognized methods used to determine the state of degradation in the insulation. HV tests performed at 0.1 Hz do have potential advantages compared to more traditional 50 Hz tests. LÄS MER

  3. 2. A µCT Investigation of the Electrical Breakdown Mechanisms in Mica/Epoxy Machine Insulation

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad mekanik

    Författare :Carl Saxén; [2017]
    Nyckelord :Breakdown; composite; computed tomography; epoxy; mica; resin; winding; x-ray; μCT;

    Sammanfattning : Mica/Epoxy machine insulation is a composite material of the mineral mica, fibre-glass mesh and epoxy resin. The material is used in motors and generators rated for high voltage, where the material must withstand multiple stresses such as elevated temperatures, mechanical and electrical stresses. LÄS MER